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1. [Amps] IM distortion and such (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 25 Jun 2006 11:10:09 -0400; Richardson's looked at the AL80B manual also. They had no problem with it. They own Amperex. Anyone with a basic understanding of tubes should know a thoriated tungsten's life isn't compromised in t; /archives//html/Amps/2006-06/msg00375.html (14,712 bytes)
2. Re: [Amps] IM distortion and such (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 25 Jun 2006 15:57:31 -0400; Tom, Sure, you can run over the rated current temporarily, but to advise one to do so sets you up for liability. I can not tell someone to operate a tube outside the published curves. What if I did,; /archives//html/Amps/2006-06/msg00390.html (17,340 bytes)
3. Re: [Amps] IM distortion and such (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Sun, 25 Jun 2006 18:06:29 -0400; I think you are really saying an engineer shouldn't ever design outside what is actually published on a spec sheet that only covers a limited number of situations under any condition, even if the co; /archives//html/Amps/2006-06/msg00399.html (9,950 bytes)
4. Re: [Amps] IM distortion and such (score: 1): Author: Doug Renwick <ve5ra@sasktel.net>; Date: Sun, 25 Jun 2006 19:58:52 -0600; Will, The Wright brothers are glad they didn't have an engineer with similar caution. Remember that experiment trumps theory EVERY, EVERY time. You can only prove how fast she goes by actual testing.; /archives//html/Amps/2006-06/msg00415.html (10,293 bytes)
5. Re: [Amps] IM distortion and such (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Sun, 25 Jun 2006 20:39:39 -0400; It's according to what kind of audio amp. Guitar amps are designed to purposely introduce distortion. That's where the squeal of the electric guitar comes from. The bands actually prefer this. Howeve; /archives//html/Amps/2006-06/msg00419.html (11,700 bytes)
6. Re: [Amps] IM distortion and such (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Mon, 26 Jun 2006 10:56:56 +0200 (CEST); design outside what is actually published on a spec sheet that only covers a limited number of situations under any condition, even if the component manufacturer, field history, or direct testing sho; /archives//html/Amps/2006-06/msg00420.html (7,899 bytes)
7. Re: [Amps] IM distortion and such (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 26 Jun 2006 06:03:14 -0400; Not when they approve the operating conditions. I think the problem here is this thread, like many on this reflector, has had a major performance change. The original subject was the manual of the A; /archives//html/Amps/2006-06/msg00421.html (8,144 bytes)
8. Re: [Amps] IM distortion and such (score: 1): Author: Peter Chadwick <g3rzp@g3rzp.wanadoo.co.uk>; Date: Mon, 26 Jun 2006 13:56:26 +0200 (CEST); You have a better opinion of component manufacturers than I have!!!! I think the problem here is this thread, like many on this reflector, has had a major performance change.< You are quite right, of; /archives//html/Amps/2006-06/msg00424.html (7,927 bytes)
9. Re: [Amps] IM distortion and such (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Mon, 26 Jun 2006 08:10:35 -0700 (PDT); Normally I stay out of these, but in this case I have to say something... We're not building bridges here where people can lose their lives if a design stretches tolerances a bit. Granted, you could; /archives//html/Amps/2006-06/msg00438.html (13,149 bytes)
10. Re: [Amps] IM distortion and such (score: 1): Author: "Cecil Acuff" <chacuff@cableone.net>; Date: Mon, 26 Jun 2006 10:16:36 -0500; As a private pilot I can tell you the aircraft manuals contain lots of limitations based on the test pilots recommendations. One for example is the "Maximum demonstrated crosswind" numbers...which ju; /archives//html/Amps/2006-06/msg00439.html (12,170 bytes)
11. Re: [Amps] IM distortion and such (score: 1): Author: "Gary Smith" <wa6fgi@sbcglobal.net>; Date: Mon, 26 Jun 2006 08:26:10 -0700; Coming from Mr Matney, a most excellent point of view. Particularly where one could be sued into bankruptcy and then oblivion. Gary...wa6fgi _______________________________________________ Amps maili; /archives//html/Amps/2006-06/msg00440.html (13,079 bytes)
12. Re: [Amps] IM distortion and such (score: 1): Author: Joe Isabella <n3ji@yahoo.com>; Date: Mon, 26 Jun 2006 08:40:10 -0700 (PDT); Since when does management listen to engineers?? They listen to the mighty $$$$. Just like the Space Shuttle Challenger disaster chain of events, the engineers said "NO!!", but management said "We'll; /archives//html/Amps/2006-06/msg00441.html (13,433 bytes)
13. Re: [Amps] IM distortion and such (score: 1): Author: "Cecil Acuff" <chacuff@cableone.net>; Date: Mon, 26 Jun 2006 11:37:50 -0500; I would bet with the collective wisdom of this group two or three amp designs fitting the power levels and complexity generally agreed upon could be created and posted in an FAQ or Projects section o; /archives//html/Amps/2006-06/msg00445.html (16,557 bytes)
14. Re: [Amps] IM distortion and such (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 26 Jun 2006 13:15:59 -0400; What people forget is amateur radio is not an unlimited money customer resource like commercial radio, and the basic use is a lot different. Commercial RF applications have deep pockets, Hams are ch; /archives//html/Amps/2006-06/msg00446.html (11,606 bytes)
15. Re: [Amps] IM distortion and such (score: 1): Author: "Tom W8JI" <w8ji@w8ji.com>; Date: Mon, 26 Jun 2006 13:34:55 -0400; 1.) It was already agreed the extra emission demand causes no component life problems. 2.) It can be proven it doesn't make the amp less linear as was initially claimed. Case in point, read the post; /archives//html/Amps/2006-06/msg00449.html (10,146 bytes)
16. Re: [Amps] IM distortion and such (score: 1): Author: "Jim Brown" <jim@audiosystemsgroup.com>; Date: Mon, 26 Jun 2006 12:18:55 -0700; EXACTLY! While I don't know enough about the SB220 to know whether you're right about that particular amp, I strongly agree that one of the most important components of good engineering is spending m; /archives//html/Amps/2006-06/msg00452.html (11,353 bytes)
17. Re: [Amps] IM distortion and such (score: 1): Author: Colin Lamb <k7fm@teleport.com>; Date: Mon, 26 Jun 2006 12:21:57 -0700 (GMT-07:00); "4.) The quickest way to bankruptcy is to build a product with stuff inside that does no good, and that almost no one wants to pay for." I would like to modify that statement a bit. Actually, some of; /archives//html/Amps/2006-06/msg00454.html (8,642 bytes)
18. Re: [Amps] IM distortion and such (score: 1): Author: "Dr. David Kirkby" <david.kirkby@onetel.net>; Date: Mon, 26 Jun 2006 20:48:56 +0100; You might find this article "Aromatherapy and Audiophools" http://www.g8wrb.org/useful-stuff/audiophools.pdf interesting. -- Dr. David Kirkby _______________________________________________ Amps mail; /archives//html/Amps/2006-06/msg00455.html (9,373 bytes)
19. Re: [Amps] IM distortion and such (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 26 Jun 2006 10:51:30 -0400; Tom, No, your mis-quoting what I said. I said after I corrected and apologized, that deviating outside the curve (line was wrong), would be past it's maximum (IE higher currents, non-linear regions,; /archives//html/Amps/2006-06/msg00457.html (11,638 bytes)
20. Re: [Amps] IM distortion and such (score: 1): Author: "Will Matney" <craxd1@verizon.net>; Date: Mon, 26 Jun 2006 11:51:16 -0400; Gary, You would think being sued is the worst part. What if a disgruntled customer reported you to the state license board? You would then have a review about your engineering license. Here, they bei; /archives//html/Amps/2006-06/msg00458.html (15,217 bytes)

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